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You searched for: subject:"'ecology'"
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[texts]The Effectiveness of China’s National Forest Protection Program and National-level Nature Reserves, 2000 to 2010 - Guopeng Ren
There is profound interest in knowing the degree to which Chinas institutions are capable of protecting its natural forests and biodiversity in the face of economic and political change. Chinas two most important forest protection policies are its National Forest Protection Program (NFPP) and its National-level Nature Reserves (NNRs). The NFPP was implemented in 17 provinces starting in the year 2000 in response to deforestation-caused flooding...
Keywords: Ecology
[texts]Mechanism of β-Aminobutyric Acid-Induced Resistance in Wheat to the Grain Aphid, Sitobion avenae - He-He Cao
The non-protein amino acid β-aminobutyric acid (BABA) could induce plant resistance to a broad spectrum of biotic and abiotic stresses. However, BABA-induced plant resistance to insects is less well-studied, especially its underlying mechanism. In this research, we applied BABA to wheat seedlings and tested its effects on Sitobion avenae. When applied as a soil drench, BABA significantly reduced weight of S...
Keywords: Ecology
[texts]The impacts of historical barriers on floristic patterns of plant groups with different dispersal abilities in the Ryukyu Archipelago, Japan - Koh Nakamura
The effects of historical barriers in biogeographical patterns are expected to persist differently depending on dispersal abilities of organisms. We tested two hypotheses that plant groups with different dispersal abilities display different floristic patterns, and that historical barriers can explain floristic differentiation patterns in plants with low dispersal ability but not in plants with higher dispersal ability, in the seed plant flora of the Ryukyu Archipelago...
Keywords: Ecology
[texts]Spatial distribution and seasonal fluctuations of Drosophila on Santa Catalina Island with an emphasis on the repleta species group - Joyce Y Kao
Santa Catalina Island is a small island off the coast of southern California and for its modest size harbors several species of flies from the Drosophila genus. We performed an island-wide survey of Drosophila species to ascertain which species were endemic to the island and where they were most abundant. In doing so, we have assembled useful sampling information for researchers who wish to conduct field studies on Santa Catalina Island...
Keywords: Ecology
[texts]Data-intensive multidimensional modeling of forest dynamics - Jean F Lienard
Forest dynamics are highly dimensional phenomena that are poorly understood theoretically. Modeling these dynamics is data-intensive and requires repeated measurements taken with a consistent methodology. Forest inventory datasets offer unprecedented opportunities to model these dynamics, but they are analytically challenging due to high dimensionality and sampling irregularities across years. We develop a methodology for predicting forest stand dynamics using such datasets...
Keywords: Ecology
[texts]Spatial variation in water loss predicts terrestrial salamander distribution and population dynamics - William Peterman
Many patterns observed in ecology, such as species richness, life history variation, habitat use, and distribution have physiological underpinnings For many ectothermic organisms temperature relations shape these patterns, but for terrestrial amphibians, water balance may supersede temperature as the most critical physiologically-limiting factor. Many amphibian species have little resistance to water loss, which restricts them to moist microhabitats and may significantly affect foraging, dispers...
Keywords: Ecology
[audio]07.12.2007 lisovskiy na radio svobodniy golos - yuriy shevchuk
07.12.2007
Keywords: ecology
Downloads: 24
[texts]On a solution of the biodiversity paradox and a competitive coexistence principle - Lev V. Kalmykov
The biodiversity paradox is the central problem in theoretical ecology. The paradox consists in the contradiction between the competitive exclusion principle and the observed biodiversity. This contradiction is the key subject of the long-standing and continuing biodiversity debates. The paradox impedes our insights into biodiversity conservation. Previously we proved that due to a soliton-like behaviour of population waves complete competitors can indefinitely coexist in one closed homogeneous ...
Keywords: Ecology
Downloads: 2
[texts]The dark side of theoretical ecology - Lev V. Kalmykov
Good science must be clearly transparent in its theories, models and experiments. Earlier David Tilman drew attention to the fact that ecologists investigate interspecific competition phenomenologically, rather than mechanistically. To create a mechanistic model of a complex dynamic system we need to logically describe interactions of its subsystems which lead to emergence of new properties on the macro-level...
Keywords: Ecology
Downloads: 1
[texts]ma lei zuo wu - yang hui sheng

Keywords: ecology
Downloads: 287
[texts]Misuse of the null hypothesis in data reporting and interpretation : report - King, D. E. C
"PIBS2201"
Keywords: Ecology
Downloads: 331
[texts]Os cabotinos - Ruano, António. cn
Mode of access: Internet
Keywords: ecology
Downloads: 187
[texts]lin xue gai lun (Volume 6) - cai yi chun zhang hua ling (yi)

Keywords: ecology
Downloads: 175
[texts]A solution to the biodiversity paradox by logical deterministic cellular automata - Lev V. Kalmykov
The paradox of biological diversity is the key problem of theoretical ecology. The paradox consists in the contradiction between the competitive exclusion principle and the observed biodiversity. This principle was formulated incorrectly because of limitations of the traditional black-box models of interspecific competition. The principle is very important as the basis for understanding evolutionary processes...
Keywords: Ecology
[texts]Sampling principles for biodiversity study - Xubin Pan
Sampling is a fundamental tool in ecology and critical for biodiversity measurement. However, basic principles of biodiversity sampling have been overlooked for many years. In this paper, I proposed and explored five principles of sampling for a specific area and biodiversity study. The first principle of sampling, species increasing with area, is that the number of species increases with the area...
Keywords: Ecology
Downloads: 1
[texts]Sap flow through petioles and petioles reveals leaf-level responses to light and vapor pressure deficit in the tropical tree Tabebuia rosea (Bignoniaceae) - Adam Roddy
Continuous measurements of sap flow have been widely used to measure water flux through tree stems and branches. However, these measurements lack the resolution necessary for determining fine-scale, leaf-level responses to environmental variables. We used the heat ratio method to measure sap flow rates through leaf petioles and leaflet petiolules of saplings of the tropical tree Tabebuia rosea (Bignoniaceae) to determine how leaf and leaflet sap flow responds to variation in light and vapor pres...
Keywords: Ecology
[texts]lin xue gai lun (Volume 1) - cai yi chun wu bao qun

Keywords: ecology
Downloads: 155
[texts]mian hua zai pei xue - shi zhen

Keywords: ecology
Downloads: 174
[texts]ResistanceGA: An R package for the optimization of resistance surfaces using genetic algorithms - William E Peterman
1. Understanding how landscape features affect functional connectivity among populations is a cornerstone of landscape genetic analyses. However, parameterization of resistance surfaces that best describe connectivity is largely a subjective process that explores a limited parameter space. 2. ResistanceGA is a new R package that utilizes a genetic algorithm to optimize resistance surfaces based on pairwise genetic distances and either CIRCUITSCAPE resistance distances or cost distances calculate...
Keywords: Ecology
Downloads: 3
[texts]meng guo ren min gong he guo de tu rang - fang wenzhe

Keywords: ecology
Downloads: 382
[texts]Response to climate change is related to species traits in the Lagomorpha - Katie Leach
Climate change during the last five decades has impacted on natural systems significantly and the rate of current climate change is of great concern among conservation biologists. Here, we assess the projected change in the bioclimatic envelopes of all 87 species in the mammalian order Lagomorpha under future climate using expertly validated species distribution models. Results suggest that climate change will impact more than two-thirds of Lagomorphs, with leporids (rabbits, hares and jackrabbi...
Keywords: Ecology
Downloads: 1
[texts]lin ye ji kan (Volume 2) - zhong guo ke xue yuan lin ye tu rang yan jiu suo

Keywords: ecology
Downloads: 212
[texts]lin xue gai lun (Volume 3) - cai yi chun wu bao qun (yi)

Keywords: ecology
Downloads: 178
[texts]Beyond species: why ecological interaction networks vary through space and time - Timothée Poisot
Community ecology is tasked with the considerable challenge of predicting the structure, and properties, of emerging ecosystems. It requires the ability to understand how and why species interact, as this will allow the development of mechanism-based predictive models, and as such to better characterize how ecological mechanisms act locally on the existence of inter-specific interactions. Here we argue that the current conceptualization of species interaction networks is ill-suited for this task...
Keywords: Ecology
Downloads: 4
[texts]Estimating seed bank accumulation and dynamics in three obligate-seeder Proteaceae species - Meaghan E. Jenkins
The seed bank dynamics of the three co-occurring obligate-seeder (i.e. fire-sensitive) Proteaceae species, Banksia ericifolia, Banksia marginata and Petrophile pulchella, were examined at sites of varying time since the most recent fire (i.e. plant age) in the Sydney region. Significant variation among species was found in the number of cones produced, the position of the cones within the canopy, the percentage of barren cones produced (Banksia species only), the number of follicles/bracts produ...
Keywords: Ecology
Downloads: 2
[texts]Exploring the spatially explicit predictions of the Maximum Entropy Theory of Ecology - Daniel McGlinn
The Maximum Entropy Theory of Ecology (METE) is a unified theory of biodiversity that attempts to simultaneously predict patterns of species abundance, size, and spatial structure. The spatial predictions of this theory have repeatedly performed well at predicting diversity patterns across scales. However, the theoretical development and evaluation of METE has focused on predicting patterns that ignore inter-site spatial correlations...
Keywords: Ecology
Downloads: 4
[texts]Building a better frog trap: The benefits of mal-adaptive habitat choice for metapopulations with different life history strategies - Rosemary Hartman
By spatially distributing offspring among several habitat patches in varying environments, an organism can "hedge its bets" to protect against bad conditions in any single patch. This strategy can maintain populations even when some or even all locations are, on average, population sinks. However, species may not have evolved this bet-hedging mechanism, especially when sink environments are anthropogenic "traps" - locations where traditional habitat cues have been altered...
Keywords: Ecology
Downloads: 2
[texts]Particle size distribution and optimal capture of aqueous macrobial eDNA - Cameron R. Turner
1. Detecting aquatic macroorganisms with environmental DNA (eDNA) is a new survey method with broad applicability. However, the origin, state, and fate of aqueous macrobial eDNA - which collectively determine how well eDNA can serve as a proxy for directly observing organisms and how eDNA should be captured, purified, and assayed - are poorly understood. 2. The size of aquatic particles provides clues about their origin, state, and fate...
Keywords: Ecology
Downloads: 2
[texts]Some plants don’t play games: An ideal free distribution explains the root production of plants that do not engage in a tragedy of the commons game. - Gordon McNickle
1. Game theoretic models that seek to predict the most competitive strategy plants use for competition in soil are clear; they generally predict that over-proliferation of roots is the only evolutionarily stable strategy. However, empirical studies are equally clear that not all plants employ this strategy of over-proliferation of roots. Here, our goal was to develop and test an alternative non-game theoretic model that can be used to develop alternative hypotheses for plants that do not appear ...
Keywords: Ecology
[texts]Building realistic assemblages with a Joint Species Distribution Model - David J. Harris
1. Species distribution models (SDMs) can be used to predict how individual species\---|and whole assemblages of species\---|will respond to a changing environment. Until now, these models have either assumed (1) that species' occurrence probabilities are uncorrelated, or (2) that species respond linearly to preselected environmental variables. These two assumptions currently prevent ecologists from modeling assemblages with realistic co-occurrence and species richness properties...
Keywords: Ecology
Downloads: 5
[texts]mian hua ji qi zai pei - chen busheng yang huisheng

Keywords: ecology
Downloads: 256
[texts]mangal - making complex ecological network analysis simpler - Timothée E Poisot
The study of ecological networks is severely limited by (i) the difficulty to access data, (ii) the lack of a standardized way to link meta-data with interactions, and (iii) the disparity of formats in which ecological networks themselves are represented. To overcome these limitations, we conceived a data specification for ecological networks. We implemented a database respecting this standard, and released a R package ( \`rmangal\`) allowing users to programmatically access, curate, and deposit...
Keywords: Ecology
Downloads: 3
[texts]The architectural stratification and woody species diversity in subtropical evergreen broadleaf forests along a latitudinal thermal gradient of the Ryukyu Archipelago, Japan - Sm Feroz
In order to compare stand structure and woody species diversity of subtropical evergreen broadleaf forests along a latitudinal thermal gradient of the Ryukyu Archipelago, tree censuses in a 750 m2 plot in Okinawa Island and a 400 m2 plot in Ishigaki Island were performed. The number of layers increased along a latitudinal thermal gradient from four in the forest of Okinawa Island to five in the forest of Ishigaki Island...
Keywords: Ecology
[texts]nei meng xi lin guo lei meng cao chang gai kuang ji qi zhu yao mu cao de jie shao 内蒙锡林郭勒盟草场概况及其主要牧草的介绍 - wang dong 王栋

Keywords: ecology
Downloads: 163
[texts]lin ye ming ci - zhong guo ke xue yuan bian yi ju

Keywords: ecology
Downloads: 282
[texts]lin ye ji kan (Volume 1) - zhong guo ke xue yuan lin ye tu rang yan jiu suo

Keywords: ecology
Downloads: 186
[texts]Elements of ecology - Clarke, George L. (George Leonard), 1905-
Includes bibliography
Keywords: Ecology
Downloads: 1,513
[texts]A comparison of the gobiid fauna between a shoal and an island habitat in the central Visayas (Philippines) - Klaus M. Stiefel
We surveyed the marine gobies of Malapascua island (Philippines), the surrounding islets and the nearby Monad shoal. We found 59 species in 19 genera, including 2 undescribed species of the genus Trimma, and 3 geographic and 6 depth range expansions. Furthermore we describe a new type of mimicry between the goby Koumasetta hectori and the cardinalfish Apogon nigrofasciatus. The comparison of the island versus shoal goby fauna showed a lesser species richness of shrimpassociated gobies at the sho...
Keywords: Ecology
Downloads: 1
[texts]The web of life : a first book of ecology - Storer, John H. (John Humphries), b. 1888
"A Mentor book."
Keywords: Ecology
Downloads: 176
[texts]lv hua zu guo de gao chao (Volume 1) - zhong hua ren min gong he guo lin ye bu

Keywords: ecology
Downloads: 315
[texts]min jian shu cai zhu cang fa - shang ye bu shu cai guo pin shang ye ju hui bian

Keywords: ecology
Downloads: 206
[texts]Allee effects are necessary to explain the emergence of ‘elastic’ ranges - Alexander Kubisch
In times of severe environmental changes and resulting shifts in the geographical distribution of animal and plant species it is crucial to unravel the mechanisms responsible for the dynamics of species’ ranges. Without such a mechanistic understanding reliable projections of future species distributions are difficult to derive. Species ranges may be highly dynamic and subject to ‘elastic’ behavior, i.e...
Keywords: Ecology
Downloads: 4
[texts]Complex behavioral manipulation drives mismatch between host and parasite diversity - Fabricio Baccaro
Parasites and hosts are intimately associated such that changes in the diversity of one partner are thought to lead to changes in the other. We investigated this linked diversity hypothesis in a specialized ant-Ophiocordyceps system in three forests across 750 km in Central Amazonia. All species belonging to the fungal genus Ophiocordyceps associated with ants have evolved some degree of behavioral control to increase their own transmission, but the leaf-biting behavior is the most complex form ...
Keywords: Ecology
Downloads: 3
[texts]lin xue gai lun (Volume 2) - cai yi chun wu bao qun (yi)

Keywords: ecology
Downloads: 155
[texts]Linking indices for biodiversity monitoring to extinction risk theory - Michael A. McCarthy
Biodiversity indices often combine data from different species when used in monitoring programs. Heuristic properties can suggest preferred indices, but we lack objective ways to discriminate between indices with similar heuristics. Biodiversity indices can be evaluated by determining how well they reflect management objectives that a monitoring program aims to support. For example, the Convention on Biological Diversity requires reporting about extinction rates, so simple indices that reflect e...
Keywords: Ecology
Downloads: 3
[texts]lin xue gai lun (Volume 5) - zhang hua ling wu bao qun (yi)

Keywords: ecology
Downloads: 219
[texts]jiang xi zhong yao (Volume 1) - jiang xi sheng zhong yao yan jiu suo

Keywords: ecology
Downloads: 265
[texts]kun chong tu pu (Volume 1) - wang yun wu zhou jian ren

Keywords: ecology
Downloads: 148
[texts]An appraisal of the classic forest succession paradigm with the shade tolerance index - Jean F Lienard
In this paper we revisit the classic theory of forest succession that relates shade tolerance and species replacement and assess its validity to understand patch-mosaic patterns of forested ecosystems of the USA. We introduce a macroscopic parameter called the "shade tolerance index" and compare it to the classic continuum index in southern Wisconsin forests. We exemplify shade tolerance driven succession in White Pine--Eastern Hemlock forests using computer simulations and analyzing approximate...
Keywords: Ecology
Downloads: 1
[texts]lin xue gai lun (Volume 4) - zhang hua ling wu bao qun (yi)

Keywords: ecology
Downloads: 182
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